Lesson overview · Free interview practice

Subsets

Generate all subsets of a given set.

Topics in the full lesson
  • Concept and Use Cases
  • When to Use
  • Time and Space Complexity
  • Iterative Approach to Generate Subsets
  • Recursive Approach to Generate Subsets
  • Bit Manipulation Approach to Generate Subsets

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CodingMedium

Subsets II

Question

Given an integer array nums that may contain duplicates, return all possible subsets (the power set). The result must not contain duplicate subsets, and the subsets may be returned in any order.

Take a moment to think about this before revealing the answer

Explain your reasoning or try an implementation before comparing answers.

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CodingMedium

Letter Case Permutation

Question

Write a program that generates all possible letter case permutations for a given string, where each character can be either uppercase or lowercase.

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Explain your reasoning or try an implementation before comparing answers.

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CodingMedium

Combination Sum II

Question

Given an array of integers and a target sum, find all unique combinations of the integers that add up to the target sum, with each integer only used once in each combination.

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Explain your reasoning or try an implementation before comparing answers.

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